Gloria Rydgren, Soprano New York Recital Debut Entered from booking ledger and New York Times concert listing and review. "THE WEEK'S MUSIC PROGRAMS." New York Times (1923-), Sep 27 1964, p. 1. ProQuest. Web. 4 Jan. 2024. Ericson, Raymond. "SOPRANO PRESENTS FIRST RECITAL HERE." New York Times (1923-), Sep 28 1964, p. 18. ProQuest. Web. 4 Jan. 2024. solo recital 1964-09-27T17:30:00